Sewer system



(No Model.)

I C.v E. GRUNSKY.

SEWER SYSTEM.

No. 355,163. Patented Dec. 28, 1 8 86.

UNITED STATES PATENT OFFICE.

CHARLES EWALD GRUNSKY, OF SACRAMENTO, CALIFORNIA.

,SEWERVSYSTEM.

ESPECIFICATION forming part of Letters'Patent No. 355,163, dated December 28, 1886.

' Application filed February 10, 1886. Serial No. 191,505. (No model.)

the following to be afull, clear, and exact de-' scription thereof.

My invention relates to a new and useful sewer system; and it consists in pipes or mains graded to the amount ofsewage and sufficiently small to insure velocities which will prevent deposits, self-discharging receivers connected with the closets, basins, sinks, 8rd, and located at varying heights above the mains, and singly or in groups, the membersof which have the same elevation, pipes connecting the receivers with the mains, whereby their contents will enter the mains under considerable pressure,-

, and check valves or gates in the mains, whereby Water may be introduced and backed up into any given receiver or group of receivers to cause them to act simultaneously, and thereby -to flush the whole system, all of-which I shal hereinafter more fully describe.

The object of my invention is to provide a sewer system which shall be effective under all circumstances, and which will'perinit the pipes or mains to be laid independent of grade.

Referring to the accompanying drawings, Figure 1 is a View showing the general arrangement of my system,' two districts being illustrated. Fig. 2 is a view showing the selfdischarging receiver.

A is a main consisting of a pipe graded in diameter according to the amount of sewage to be passed through it, though sufficiently small to insure a velocity necessary to prevent deposits. This main may be laid to any grade found convenient.

vl? are the.receivers. These are located at an elevation above the main, and should be arranged in districts or groups, those in each district or group being at the same elevation. They may be located in buildings or elsewhere, and they receive the sewage from said buildings through the pipes O, which may be supposed to lead from sinks, water closets, basins, &c.

D are the pipes-connecting the receivers with the main.

The peculiar construction of the receivers will be seen by reference to Fig. 2.

I) is a tank, preferably cylindrical and provided with a sloping bottom, I), in the shape of an invertedcone frustum. The pipes G from the various sinks, closets, basins, &c., lead into this tank.

I) is a siphonpipe, the short arm of which lies within the tank I), and opens out near its bottom. It emerges from the side of the tank near its top, and its long armextends downwardly to and is connected with the pipe D to the main.

b is a vent-pipe let into the top of the tank and extending upwardly to any given height.

I) is a vent-pipe connecting the pipe D with the vent-pipe b In the mainA are let check valves or gates a,

which remain'normally open, but which may be closed when occasion requires, as I. shall presently explain.

The operation of my system is as follows: All the sewage from a given structure or the structures in a given district is passed through the pipes O'into the tanks 1) of the receivers B.

These, when full, cause the periodical action of their siphon-pipes bflwhich drain thetanks. The bottom of the tank is made conical, in order to insure a complete discharge of its contents each time the siphon acts. The solid matter will accumulate in the bottom of the receiver, and will be the first to pass through the siphon under the greatest pressure and with considerable velocity, and will be followed by the liquid matter. Owing to the elevation of the receivers above the main,the contents of the former enter the latter under a pressure equal to their lieight and'this can be made so great as to give the material sufficient velocity through the main to render the main practicallyindependent ofgrade. The receivers are all tight, and the siphons are watertight to their connection with the main.

The entire system is a closed one, the only communication with the open air. beingthrough the vent-tubes leading up from the receivers.

The check valves or gates a are employed-to check theflow of sewage in the whole or in any part of the system and cause a backfiow of water, which can be introduced into the sewer at convenient points to the group of receivers next above any valve which has been closed. When such a group is full, the opening of the check-valve will insure a flushing of the pipes.

Having thus described my invention, what I claim as new, and desire to secure by Letters Patent, is-

1. The combination,with asewer, ofa group of elevated self-discharging sewage-receivers, the said receivers being placed at the same elevation and arranged in one or more groups or pairs throughout a district, whereby the sewage in the collecting pipes and mains may be subjected to pressure limited only by the elevation of said receivers, substantially as herein described.

2. The combination, with the sewer, of the self-discharging receivers of a sewage system arranged in one or more groups, in each of which all receivers are placed at the same elevation, suificiently great to insure a pressure in the collecting pipes and mains that will make them independent of grade, substantially as described.

3. The combinal ion, with the sewer-main for each district containing one or a group of selfdischarging receivers at equal elevation, of the gates or valves a, for the purpose of causing a backfiow through the sewer-pipes into the receivers, substantially as described.

4. In combination'with a sewer-main, one or more self-discharging receivers-placed at an elevation above the main, pipes connecting the receiver with the closets, sinks,'basins, &c., pipes connect'ng it with the main, and gates or valves in the main for causing a backflow into the receivers to effect flushing, substantially as (1(SCIllJBCl. A

5. The combination of the main A, provided with check valves or gates at, with the elevated self-discharging receivers B, arranged in one or more pairs or groups placed at the same elevation throughout a district, andthe pipes D, connecting said receivers with the main, substantially as described.

6. The sewer-main A, open only at its point of d-ischarge,in combination with the closed receiver B, placed at an elevation above the main, and consisting of a tank, b, and a drainingsiphon, b the vent-pipe b from the tank, the pipes C from the closets, basins, sinks, &c., emptying into the tank, and the pipe D, connect-ing the siphon with the main, substantially as described.

7. The self-discharging elevated receiver B, consisting of the closed tank b, having a sloping bottom, I), and connected with the pipes leading from the closets, basins, sinks, &c., the siphon-pipe I), for draining the tank and connected with the pipes leading to the sewermain, the vent-pipe b from the top ofthe tank,

and the vent-pipe 1), connecting said pipe b with thepipe to the main, substantially as herein described.

In witness whereof I have hereunto set my hand. i

CHARLES EWALD GRUNSKY.

- Vitnesses:

S. H. NoURsE, H. 0. LEE. 

